If you live in London or a high-traffic urban area, air quality isn’t just a concern — it’s a priority. Nitrogen dioxide (NO₂), a major component of NOx pollution from vehicle emissions, regularly exceeds safe limits across many parts of the UK. In fact, a 2024 report from the Mayor of London’s office revealed that every London borough breached World Health Organization NO₂ guidelines, with residential streets near main roads showing particularly high exposure. With air quality now a growing health concern, it’s never been more important to choose a Mechanical Ventilation with Heat Recovery (MVHR) system that doesn’t just ventilate your home, but also actively protects you from pollution.
The Mitsubishi Electric’s Lossnay range (VL-250, VL-350, and VL-500) are trusted for their premium NOx filtration, industry-leading efficiency, and whisper-quiet operation. What sets them apart? A unique third filter slot that enables the installation of highest grade filters for MVHR F7 or NOx filters directly within the unit – a rare feature in domestic systems and a game-changer for homes in polluted areas.
What is the Mitsubishi Lossnay MVHR Range?
The Lossnay range is a series of compact, high-performance MVHR units designed to continuously extract stale air from moisture-heavy areas (like kitchens, bathrooms, and utility rooms) and supply fresh, filtered air into living spaces and bedrooms. The real magic lies in the heat recovery technology: up to 90% of the heat from the extracted air is transferred to the incoming fresh air, ensuring your home stays warm and energy bills stay low.
Whether you're building a new home or upgrading an existing system, the VL-250, VL-350, and VL-500 units offer scalable solutions depending on your property's size and ventilation needs.
Model Overview: VL-250, VL-350 & VL-500
VL-250 – Suitable for homes up to 120m² with up to 90% heat recovery efficiency.
VL-350 – Suitable for homes up to 200m², with up to 90% heat recovery efficiency.
VL-500 – Suitable for homes up to 250m², with up to 91% heat recovery efficiency.
All models come with the same core benefits, including:
Up to 90% Heat Recovery Efficiency
Reuse warmth from extracted air to pre-warm incoming air – reducing the load on your heating system and slashing energy costs.
Ultra Quiet Operation
Designed for residential comfort, these units are ultra quiet with sound levels as low as 15dB. Perfect for night-time use or in living spaces where peace and quiet are key.
Built-in LCD Controller
Each unit is equipped with an intuitive, built-in LCD controller to make commissioning, monitoring, and adjusting settings straightforward.
Automatic Summer Bypass
The one thing you don't need in the summer is heat recovery. The Summer By Pass mode automatically activates based on outside temperature levels and stops recovering and reusing heat. Instead the MVHR system continues to work, providing fresh, filtered air to your home continuously. You will see a bypass arrow on the unit display or controller which will indicate that the summer by pass mode has been activated. Find out more about your MVHR system in summer here.
Energy-Efficient Motors
Running costs are impressively low – as little as £35 per year to ventilate an entire home, offering one of the most cost-effective ways to achieve better indoor air quality.
Multiple Speed Settings
Customise airflow for every situation. Choose from up to four fan speeds including night-time, normal, boost, and purge modes for maximum flexibility and comfort.
A Unique Filtration Advantage
One of the standout features of the Mitsubishi Lossnay range is its optional third filter slot, exclusive to this series. This allows homeowners to install high-grade filters such as F7 (ePM2.5) or even NOx filters, directly into the unit itself – a level of purification typically only seen in high-end or commercial systems.
This built-in filtration capability sets the VL-250, VL-350, and VL-500 apart from other residential MVHR systems, which often require expensive duct-mounted filter boxes to achieve similar results.
So whether you're in a busy urban area exposed to vehicle emissions or simply want extra protection against allergens and airborne particles, the Lossnay system has you covered.
Why Choose Mitsubishi Lossnay?
Mitsubishi Electric has earned a reputation for quality, reliability, and innovation – and the Lossnay range is no exception. These units are engineered to deliver superior indoor air quality, exceptional energy savings, and quiet, reliable performance for years to come.
Perfect for new builds or retrofits, the VL-250, VL-350, and VL-500 models provide peace of mind that your home is being ventilated efficiently, quietly, and cleanly – with no compromise on comfort.
Ready to transform your indoor air quality?
Explore the Mitsubishi Lossnay range today and take the first step toward a healthier, more energy-efficient home.
Learn more about the Mitsubishi Lossnay range's technical information
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